I would wait to make that claim until this new patch hits. Heard through the grapevine that nightmare is supposed to be pretty brutal. SOA on hard should give you good indication of what to expect. Guess we shall have to wait and see.
Sounds great. But rumors of difficulty ramp ups are so outlandish these days, so I'd take them with a grain of salt.
However, that said, bug fixes could bring the difficulty in any direction. Here's hoping.